Mathematical Instrument Maker to His Majesty, and Optician to His Royal
Highness the Prince of Wales.

VOL. II.

LONDON:

PRINTED BY R. HINDMARSH,

PRINTER TO HIS ROYAL HIGHNESS THE PRINCE OF WALES,

OLD-BAILEY,

SOLD by the AUTHOR, No. 60, FLEET-STREET

THENEW YORK PUBLIC LIBRARY

ASTOR, LENOX AND TILDEN FOUNDATIONS 1897.